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This ½ oz bottle of OTO (Orthotolidine) checks your pool water's chlorine level. OTO is a reliable test solution that accurately measures the free chlorine present in your pool. With just a few drops, the solution will change color, indicating whether your chlorine levels are too high, too low, or within the optimal range.
For use with the Chlorine, Bromine & pH 3-Way Test Kit.
Note: Read back panel carefully, be sure to keep OTO solution away from skin and eyes. Keep this tester out of reach of children.
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Brand | Aqua Select® |
(11 Reviews )
Good pricing and prompt delivery.
Good pricing and prompt delivery. I expect that I will be ordering supplies in the future as needed with PoolSupplies.com. That pretty much says it all.Hi Alan! We are thrilled to hear you're happy with your Aqua Select® Replacement Test Kit Reagents purchase! We pride ourselves on offering competitive pricing and fast, reliable delivery, so it's fantastic to know we're meeting your expectations. We appreciate your business and look forward to being your go-to source for pool supplies in the future. We're always here to help if you have any questions or need assistance.
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All things we love to hear!
All things we love to hear!